<template>
	<view class="uni-countdown">
		<view v-if="showDay" class="uni-countdown__number" :style="{borderColor: borderColor, color: color, background: backgroundColor}">{{ d }}</view>
		<view v-if="showDay" class="uni-countdown__splitor" :style="{color: splitorColor}">天</view>
		<block v-if="showTime">
			<view class="uni-countdown__number" :style="{borderColor: borderColor, color: color, background: backgroundColor}">{{ h }}</view>
			<view class="uni-countdown__splitor" :style="{color: splitorColor}">{{ showColon ? ':' : '时' }}</view>
			<view class="uni-countdown__number" :style="{borderColor: borderColor, color: color, background: backgroundColor}">{{ i }}</view>
			<view class="uni-countdown__splitor" :style="{color: splitorColor}">{{ showColon ? ':' : '分' }}</view>

			<view class="uni-countdown__number" :style="{borderColor: borderColor, color: color, background: backgroundColor}">{{ s }}</view>
			<view v-if="!showColon" class="uni-countdown__splitor" :style="{color: splitorColor}">秒</view>
		</block>
		<block v-else>{{ s }}s</block>
	</view>
</template>
<script>
export default {
	name: 'uni-countdown',
	props: {
		showDay: {
			type: Boolean,
			default: false
		},
		showTime: {
			type: Boolean,
			default: false
		},

		showColon: {
			type: Boolean,
			default: true
		},
		backgroundColor: {
			type: String,
			default: '#FFFFFF'
		},
		borderColor: {
			type: String,
			default: '#000000'
		},
		color: {
			type: String,
			value: '#000000'
		},
		splitorColor: {
			type: String,
			default: '#000000'
		},
		day: {
			type: Number,
			default: 0
		},
		hour: {
			type: Number,
			default: 0
		},
		minute: {
			type: Number,
			default: 0
		},
		second: {
			type: Number,
			default: 0
		},
		reset: {
			type: Boolean,
			default: false
		}
	},
	data() {
		return {
			timer: null,
			d: '00',
			h: '00',
			i: '00',
			s: '00',
			leftTime: 0,
			seconds: 0
		};
	},
	watch: {
		reset(val) {
			clearInterval(this.timer);
			this.startData();
		}
	},
	created: function(e) {
		this.startData();
	},
	beforeDestroy() {
		clearInterval(this.timer);
	},
	methods: {
		startData() {
			this.seconds = this.toSeconds(this.day, this.hour, this.minute, this.second);
			if (this.seconds <= 0) {
				return;
			}
			this.countDown();
			this.timer = setInterval(() => {
				this.seconds--;
				if (this.seconds < 0) {
					this.timeUp();
					return;
				}
				this.countDown();
			}, 1000);
		},
		toSeconds(day, hours, minutes, seconds) {
			return day * 60 * 60 * 24 + hours * 60 * 60 + minutes * 60 + seconds;
		},
		timeUp() {
			clearInterval(this.timer);
			this.$emit('timeup');
		},
		countDown() {
			let seconds = this.seconds;
			let [day, hour, minute, second] = [0, 0, 0, 0];
			if (seconds > 0) {
				day = Math.floor(seconds / (60 * 60 * 24));
				hour = Math.floor(seconds / (60 * 60)) - day * 24;
				minute = Math.floor(seconds / 60) - day * 24 * 60 - hour * 60;
				second = Math.floor(seconds) - day * 24 * 60 * 60 - hour * 60 * 60 - minute * 60;
			} else {
				this.timeUp();
			}
			if (day < 10) {
				day = '0' + day;
			}
			if (hour < 10) {
				hour = '0' + hour;
			}
			if (minute < 10) {
				minute = '0' + minute;
			}
			if (second < 10) {
				second =  second;
			}
			this.d = day;
			this.h = hour;
			this.i = minute;
			this.s = second;
		}
	}
};
</script>
<style lang="scss">
$countdown-height: 44upx;

.uni-countdown {
	// padding: 2upx 0;
	display: inline-flex;
	flex-wrap: nowrap;
	justify-content: center;

	&__splitor {
		justify-content: center;
		line-height: $countdown-height;
		padding: 0 5upx;
		font-size: $uni-font-size-base;
	}

	&__number {
		line-height: $countdown-height;
		justify-content: center;
		height: $countdown-height;
		border-radius: $uni-border-radius-base;
		margin: 0 5upx;
		font-size: $uni-font-size-base;
		border: 1px solid #000000;
		font-size: $uni-font-size-sm;
		padding: 0 10upx;
	}
}
</style>
